Dave (Kick-Ass) decides to start the world's first superhero team with Mindy (Hit Girl). Unfortunately, Mindy is busted for sneaking out as Hit Girl, and she's forced to retire. Dave must join forces with Justice Forever, run by a born-again ex-mobster named Colonel Stars and Stripes. Just as they start to make a real difference on the streets, the world's first super villain, The Mother F%&*r,̂ assembles his own evil league and puts a plan in motion...